Tramway for carrying elevated loads



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A. 3. BROWN. TRAMWAY FOR CARRYING ELEVATED EOADS.

No.382Q634'. 'P aten tdM 8,1883.

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TRAMWAY FOR CARRYING ELEVATED LOADS. I No. 382,634. Patented May 8,1888.1 8

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TRAMWAY- FOR CARRYING ELEVATED LOADS.

SPECIFICATION formingpart of LettersPatent N0.382,634, dated May 8,1888.

Application filed March 15, 1887. Serial No. 231,022. (No model.)

.To all whom it may concern: Be it known that I, ALEXANDER. E. BROWN, ofCleveland, in the county of Ouyahoga and State-of Ohio, have inventedcertain new and useful Improvements in Tramways for Carrying ElevatedLoads; and I do hereby declare that the following is a full, clear, andexact description thereof, reference being had to the accompanyingdrawings, making part of this application.

Myinventiou relates to certain new and useful improvements in theconstruction of elevated tramways, and has for its main-objects toprovide for use a contrivance of this type which shall be exceedinglystrong, simple, and durable in its structure, and whichat the same timeshall afford ready and efficient means for the support or travel of aconveyer-machine, and for the attachment or arrangement with thestructure of the usual cable andother appliances of a hoisting andconveying machine.

Thcmain feature of my invention maybe said to consist in a tramwaycomposed of a series of A-frames having a single track-beam ortrack-stringer arranged within the angular space between the legs ofsaid A-frames, and suspended from the apices of said frames by means ofa series of metallic suspender -like devices, all in the manner to behereinafter more fully explained, and as will be more particularlypointed out and defined in the claims of this specification.

My invention further consists in certain novel features of detailconstruction in such tramway.

To enable those skilled in the art to which my invention relates to makeand use the same, I will now proceed to more. fully describe it,referring by letters of reference to the accompanying drawings, whichform a part of this specification, and in which I have shown myinvention carried out in that form which is about the bestnow known tome and in which I have so far successfully practiced it.

In the drawings, Figure 1 is a perspective view of an elevated tramwaysuch as I have constructed and used for the purposes of sewerbuilding,and made according to my present invention; Fig. 2 is a partial verticalcrosssection at the line '00 w of Fig. 1 when drawn on a somewhat largerscale, and showing more particularly the construction and arrangementtogether of the apices of the A-frames,-the

track beam, and the metallic suspender by which said beam is supportedfrom the tops of the A-i'rames. Fig. 3 is a partial verticalcross-section at the line 3 g, on an enlarged scale, and showingparticularly the arrangement with the trackbeam of the traveling car-'riage.

In the several figures the same part will be founddesignated by the sameletter of reference.

D is a single track beam or stringer, on the upper edge of which issecured a suitable rail,

(1, upon which travels the conveying-carriage I. This track-beam issupported by metallic suspenders 0, each of which is composed,preferably, of a metallic suspender bent or twisted, as shown, so as toconstitute abroad looplike upper end, which is saddled on top of therounded end of one of the A-frames, and a plate-like depending portion,which lies in a plane transverse to the plane of the A-frame, and whichis formed or provided with a hori zontal projecting flange orfoot-piece, f, upon which rests the lower edge of the track-beam.

The A-frames are composed, as shown, ot

two convergent sticks, A and B, which are properly supported on andsecured at their lower ends to sill-pieces or base-beams G, and havetheir upper convergent ends chamfered or slabbed off, so as to come toaplane bearing of considerable area at the locality where the loop-likeportion of the suspender 0 passes over their united upper ends. portionof said suspender is securely and per;

The loop-like I manently'bolted at c c, and the upper portion of thestick A is also,by preference, temporarily secured by a proper bolt andnut at a to.v

the upper portion of the stick B.

The series of A-frames may be, if deemed expedient, braced or tiedtogether, although in practice I have found ,it necessary and desirable,to only connect by longitudinal or cross braces those two or three ofthe frames which happen to be at the tail end of the tram way,-againstwhich the pull of the hoist-rope comes, (in order to give greaterrigidity tothe structure at this point and to relieve the track beam orstringer from any compressive strain.)

In order to support the track-beam D with sufficient rigidity laterally,I provide bolt-rods e, as shown, the heads of which preferably arecountersunk in the lower portions of the suspenders G, and which,passing through one of the sticks, A, of the A-frame, are securelyfastened thereto, all as clearly illustrated in the drawings.

The machine shown at I is constructed so that its track-wheels bear andrun upon the track d, so that the depending portion of the machine hangsclose to that side of the trackbeam which is opposite to the one securedto the suspender O, the lower and main portion of the machineprojectinglaterally beneath the lower edge of the beam D. In theinstance shown this machine is caused to travel back and forth on thetramway by the action of a cable, to which the machine is clamped orothwisesecured,and which is driven by machinery in a well-known manner.-

E represents the buckets which in the case shown are used for thehoisting and conveying of the material. It will be seen thatin anelevated tramway constructed as shown and described great strength andrigidity are attained with a comparative lightness in the structure bythe combination of a single trackbeam suspended in the manner specifiedfrom the crown or apex of the series of A-frames, and that such astructure may be very readily put up and taken down, or renderedperfectly portable and-also transposable, if desired.

The track-beam D is of course composed of pieces or sections, each ofwhich is preferably equal to the allotted distance between the A-frames, and the said sections of track-beam have their-ends abutted andare secured together, preferably by splicing metallic bars which arelaid into that side of the beam over which the carriage or machinehangs, and which are securely bolted to the adjacent ends of two beams,and also to the metallic suspender,which comes under rear of the splicedjoint between the parts of said stringer. Of

course modifications may be made in the forms and arrangement, as wellas in the size and proportions of the parts shown and described, and thedetails of construction may be changed more or less,without departingfrom the principle of my invention, the gist of which, as to its primaryfeature, rests in having a single track beam supported by dependingsuspender-like devices or their equivalents, which hang over and aresustained by the apices of the A-frames in substantially the manner Ihave explained.

Having now so fully shown and described my novel construction of tramwayas to enable those skilled in the art to make and use myinvention,either in the precise form shown or in some other form embracing thesame principle, what I claim as new, and desire to secure by LettersPatent, is-

1. In an elevated tramway, the combination, with a series of A-frames,of a single track beam or stringer and aseries of depending metallicsuspender-like devices, which are secured at their upper ends to theapices of the said A-frames and at their lower ends carry the singletrack beam, all in the manner specified, for the purpose set forth.

2. In combination with a series of A-frames and a track beam orstringenlocated in the space between the converging sticks of saidframes, a metallic suspender device, G, composed of plate metal andhaving a loop like upper poltion which is saddled on the apex of theA-frame, and having its lowermost portion twisted or bent so as to bothvertically and laterally support the track'beam, all substantially ashereinbefore set forth.

In testimony whereof Ihave hereunto set my hand this 31st day of August,1886.

ALEXANDER E. BROWN.

In presence of- E. T. SOOVILL, CHAS. W. KELLY.

